70results about How to "Eliminate voids" patented technology

The invention relates to the technical field of turbine blades, in particular to a single-crystal high-temperature alloy turbine blade shell and a preparation method thereof.The shell comprises a sprue cup, a sprue, a cross gate, a slag collecting groove, a seed crystal cavity and a seed crystal growth cavity; wherein the two ends of the sprue are respectively connected with the sprue cup and the cross gate; the seed crystal cavity is vertical to the other end of the cross gate and the inlet channel of the slag collecting groove and is positioned below the seed crystal growth cavity; and the seed crystal growth cavity is respectively communicated with the seed crystal cavity, the slag collecting groove and the cross gate. According to the arrangement mode of the seed crystal, a gap between the seed crystal and the seed crystal cavity is eliminated, and the seeding defect caused by the existence of the gap is avoided. And the length of a seed crystal paste area is obviously reduced by designing a pouring gate structure and a slag collecting groove, so that the seeding defect in the seeding process of the seed crystal is avoided as much as possible.

The utility model relates to an assembly type damping composite infilled wall with an energy dissipation damping part maintenance device. The energy dissipation damping piece can be sealed, and fire prevention, corrosion prevention, water prevention, heat preservation and sound insulation can be achieved. The composite filled wallboards are installed in the structural frame and connected with the structural frame, the structural frame comprises frame columns and frame beams, and an energy dissipation damping part is connected between the upper composite filled wallboard and the lower composite filled wallboard. A slidable connecting device is installed on the outer side of the energy dissipation damping part and comprises a cover plate, a sliding groove and a sliding rail, the sliding rail is arranged on the inner side of the cover plate, and the sliding rail is embedded in the sliding groove in the inner side of the cover plate and fixedly connected with the embedded steel plate or the embedded steel bar on the lower portion of the upper composite filling wall plate. The slidable connecting device is convenient to mount and dismount, and convenience is provided for overhaul, maintenance and replacement of the energy dissipation damping part; and meanwhile, the fireproof, anti-corrosion, waterproof, heat-insulating and sound-insulating effects can be realized.

The invention discloses a grouting device and method for a prefabricated concrete composite plate, comprising: a frame, a reciprocating mechanism, a vibrating mechanism, a grouting mechanism and a scraping mechanism. The frame comprises a C-shaped slide rail, two groups of C-shaped slide rails are provided, the two groups of C-shaped slide rails are located opposite to each other, both sides of the bottom of the two groups of C-shaped slide rails are fixedly connected with support columns, a sliding plate is slidably arranged between the two groups of C-shaped slide rails, a composite plate mold is detachably connected to the top of the sliding plate, and two groups of columns are fixedly connected to the outer sides of the two groups of C-shaped slide rails. The beneficial effects are: the reciprocating mechanism, the grouting mechanism and the scraping mechanism are arranged to cooperate so that the device can perform smoothing work simultaneously during grouting, and the vibrating mechanism is arranged to utilize four groups of vibrating columns to vibrate when the device is grouting and smoothing, so as to eliminate slurry gaps, and there is no need to manually eliminate gaps later. At the same time, bubbles in the slurry can be eliminated by vibration, so as to avoid hollowing of the finished composite plate and ensure the quality of the finished product.

The utility model relates to a mower and a steering mechanism. The mower comprises a frame, a seat, a header, a power mechanism, a battery pack and the steering mechanism, the steering mechanism comprises a pivot seat and a steering rod, shaft holes are formed in the pivot seat and the steering rod along a second axis, a rotating shaft jointly penetrates through the shaft holes of the pivot seat and the steering rod, and at least one end of the rotating shaft is provided with a nut to limit the rotating shaft to be located in the shaft holes of the pivot seat and the steering rod. The rotating shaft penetrates through a disc spring which enables the pivoting base and the steering rod to abut against each other. The disc spring is additionally arranged at the joint of the steering rod and the pivoting seat, and the disc spring is small in axial occupied volume and has the volume advantage of being convenient for space planning; meanwhile, a gap between the steering rod and the pivoting seat is eliminated due to the disc spring, so that the steering rod does not have idle stroke when being poked by a user to rotate back and forth, and the discomfort of damping sudden change caused by the idle stroke is not felt.

The invention discloses a stacked and integrated micro-display device and a preparation method thereof, and relates to the technical field of semiconductors. The micro display device comprises a driving wafer and a plurality of display device layers arranged on the driving wafer, any display device layer comprises a sub-pixel, and the sub-pixel is electrically connected with a first type of electrode contact in the driving wafer through a transparent conductive layer at the top of the display device layer; at least one display device layer further comprises an electrode conduction structure, the electrode conduction structure is conducted with electrode contacts including the first type of electrode contacts in the driving wafer, and the electrode conduction structure comprises a first electrode conduction structure and a second electrode conduction structure which are stacked in the direction away from the driving wafer; the top height of the first electrode conduction structure is not higher than the top height of the sub-pixel in the current display device layer, and the top height of the second electrode conduction structure is not lower than the top height of the sub-pixel in the current display device layer.

The utility model relates to the technical field of solid waste treatment, in particular to a compression device for solid waste treatment, which comprises a solid waste treatment box, a first hydraulic rod and a second hydraulic rod mounted on two sides of the solid waste treatment box, a drain pipe arranged on the right side of the bottom of the solid waste treatment box, and a drawer slidably arranged on the front side of the solid waste treatment box. A feeding port and a motor are arranged on the upper side of the solid waste treatment box, the output end of the motor rotationally penetrates through the inner side of the solid waste treatment box, a cutting stirring blade is fixedly installed at the output end of the motor, and a smashing cylinder is arranged on the outer side of the cutting stirring blade. According to the solid waste compaction device, solid waste is smashed before solid waste compaction work, the appearance of the solid waste is reduced, large gaps are eliminated, the compaction degree in the later period is higher, in addition, water in the solid waste is compacted and separated out in the compaction process and is discharged through the drainage filter holes, compaction and drainage are synchronously carried out, and the compaction efficiency is improved. Solid waste compressed blocks compacted by the solid waste compacting machine are high in compaction degree, low in water content and convenient to transport and store.

A flip chip bonding method includes: obtaining a bare chip including a first substrate and an adhesive layer on the first substrate; bonding the bare chip to a second substrate different from the first substrate; and curing the adhesive layer. Curing the adhesive layer includes: heating the second substrate to melt the adhesive layer, and providing air with a pressure greater than atmospheric pressure to the adhesive layer and the second substrate.

The invention discloses an arc-shaped backboard connector assembly, the arc-shaped backboard connector assembly is arranged on the inner wall of a barrel body area in a wall-attached manner, the arc-shaped backboard connector assembly comprises a plurality of layers of arc-shaped backboard units which are sequentially connected in an overlapped manner, the backboard units are mutually independent, and a complete current-carrying circuit is arranged in each backboard unit. The arc-shaped backboard connector assembly adopted in the application has the function of a multilayer printed circuit which is the same as that of a PCB laminated board, and meets the requirements of current and signal transmission in an application scene; and the independent back plate units can be bent to be matched with the arc-shaped back plate connector assembly formed by overlapping and connecting the back plate units on the inner wall of the cylinder body, so that the wall-attached mounting requirement of the cylinder body can be met, a gap between a traditional PCB laminated board and the inner wall of the cylinder body after the traditional PCB laminated board is mounted is eliminated, and the advantages of integration, light weight and miniaturization are improved.

This invention belongs to the field of welding workpiece positioning tooling technology, specifically a multi-angle welding device for galvanized steel pipes based on a rotating station, including a welding base; a welding head is provided on the welding base; by fixing two galvanized steel pipes to the center of a first rotating ring plate, the first rotating ring plate is adjusted and limited after the steel pipe mating surface is closed, and the first electric slide is slid according to the pipe length, and the steel pipe is rotated to the mating end by a second servo motor, and the welding assembly cooperates with the laser head to perform circumferential welding; during welding, the first servo motor drives the steel pipe to rotate, and the laser head is finely adjusted to complete the full circle welding. When welding at a large angle, the two first electric slides are moved away from each other and the angle is adjusted by the second servo motor; when welding at a small angle, the two first electric slides are brought closer together and the angle is adjusted to meet various angle welding requirements. If the mating surface is a beveled surface, the ring plate can be released, the first rotating ring plate can be adjusted to make the beveled surface correspond before being fixed to ensure a neat mating.

The utility model provides a kind of insulating bearing cable anchor, comprising: connecting component, with power transmission line hardware connection and bear load;Core body lifting ring, accommodate the glass fiber reinforced silicone rubber wire harness wound to form core body and bear load;Clamp, the inner cavity of the clamp is horn shape, the horn shape inner cavity is consistent with the wire harness of the core body lifting ring wire slot tangent direction introduction, gather has been wound in the core body lifting ring, wire harness, which needs to be shaped, is shrunk into substantially cylindrical through the cylindrical outlet of the clamp;The connecting component is connected with the core body lifting ring, and the clamp is tightly clamped on the core body lifting ring. The utility model has the beneficial effects that: by the inner cavity of the clamp is horn shape, improve the stress state of wire harness, and by additionally provided glue injection hole groove A and glue injection hole B, form complete sealing structure after silicone rubber overall coating forming, improve the reliability of product and overall electromechanical performance.

The utility model discloses a feeding device for a cable extruder, which comprises a box body, a spiral conveyor, a synchronous driving assembly, a pressing pipe barrel assembly, a vibrator, a control assembly, a damping rack and an electric heating device, and the electric heating device is arranged on the inner wall of the box body; the pipe barrel pressing assembly, the vibrator and the control assembly are arranged on the surface of the box body. The spiral conveyor and the damping rack are arranged at the top and the bottom of the box body respectively, and the synchronous driving assembly is arranged at the top of the box body. Therefore, the uniform material quantity in the lifting process is ensured through the vibrator, the fault phenomenon is avoided, the operation of the spiral conveyor and the downward pressing pipe barrel assembly is accurately controlled through the synchronous driving assembly, and it is ensured that the set quantity of materials are accurately conveyed into the downward pressing pipe barrel assembly and then evenly and stably injected into the extruder through the downward pressing pipe barrel assembly; the production stability is greatly enhanced, the spiral conveyor is driven by the synchronous driving assembly to operate in the reverse direction, internal materials are easily discharged back to the box body again, and the materials are prevented from being solidified.

The utility model relates to an intelligent mini vibrating and leveling machine, and belongs to the technical field of road and bridge construction equipment. Comprising a walking base with walking wheels, a lifting mechanism installed on the walking base, a vibrating mechanism driven by the lifting mechanism to ascend and descend and a paving and leveling mechanism. The vibrating mechanism is a vibrating material distribution push plate driven by a vibrating motor; and the paving and leveling mechanism is a roll shaft driven by a motor to rotate. The utility model relates to a small-sized vibrating and leveling machine, which can solve the problem of construction scenes under narrow working conditions through compact structural design. The equipment is small and exquisite in design and suitable for construction scenes of narrow working conditions such as the middle of a high-speed rail, has the functions of vibrating, distributing, paving and leveling, and can effectively improve the construction efficiency and quality.

The invention provides a polyester fabric crease-resistant winding device, and relates to the technical field of fabric winding, the polyester fabric crease-resistant winding device comprises a fixed box, a suspension chain transmission mechanism assembled on the fixed box, a plurality of clamping assemblies arranged at intervals and arranged below the suspension chain transmission mechanism in a transmission manner, a crease-resistant assembly arranged on the fixed box, and a winding drum detachably arranged on the fixed box; a polyester fabric is clamped below the clamping assembly; a mounting seat for assembling the winding drum is fixedly arranged on the fixed box, so that the winding drum can be mounted on the fixed box and dismounted from the fixed box; the polyester fabric moves along the suspension chain transmission mechanism under the action of the clamping assembly, so that the polyester fabric is wound in a vertical state, the phenomenon that the polyester fabric droops or is not flat due to the direct action of gravity is avoided, and when the polyester fabric is wound in the vertical state, the polyester fabric can be continuously wound under the action of the gravity. And the polyester fabric can keep better tension and flatness, wrinkles and pits are reduced, and therefore the overall winding quality is improved.

The invention discloses a transformer insulating oil leakage oil-discharge-free maintenance method and device, and relates to the technical field of insulating oil leakage maintenance, and the method comprises the steps: adjusting the internal oil pressure of a transformer to keep balance with the external atmospheric pressure; performing vacuum drying and exhausting on the interior of the transformer; carrying out vacuum leakage rate detection on the transformer in an oil-carrying state; and predicting the maintenance environment of the transformer according to the weather prediction system. Internal and external pressure balance adjustment of the insulating oil leakage position of the transformer is achieved, it is ensured that air is prevented from being sucked in the overhauling process, the overhauling quality is improved, the operation stability and safety of the transformer are improved, and the fault occurrence probability is reduced.

The invention provides an anti-oxidation coating for the surface of nickel-iron-based alloy, which is prepared by the following method, with nickel-iron-based alloy as substrate, and a lanthanum zirconate anti-oxidation coating is deposited on the substrate surface using a pulsed laser deposition method; during the pulsed laser deposition process, the substrate temperature is 550-800°C, the laser energy is 200-400J, the pulse frequency is 2-6Hz, the spacing between the lanthanum zirconate target and the substrate is 4-5cm, and a mixed atmosphere of oxygen and an inert gas with a volume ratio of 4-6:1 is used as a protective atmosphere. The obtained lanthanum zirconate anti-oxidation coating not only has good interface bonding with the nickel-iron-based high-temperature alloy, but also has good anti-oxidation performance under a saturated water vapor environment, and can achieve the purpose of alloy protection without affecting the mechanical properties of the alloy.

The utility model discloses a punch structure, cutting tool and punch die relates to tensile cutting technical field. Among them, punch structure includes punch main part and punch head, and punch head is located at one side of punch main part, and punch head and punch main part coaxial arrangement, and the outer diameter of punch head is less than the outer diameter of punch main part, and the joint part of punch head and punch main part is first camber surface, and first camber surface is used for with the inner peripheral edge of through -hole and is in conformity. The utility model provides technical scheme to eliminate the gap of punch structure and workpiece, improves the punch quality of workpiece.

The utility model discloses a municipal road laying device, and relates to the technical field of roads. The flattening device comprises a bottom plate, the top of the bottom plate is fixedly connected with a supporting rod, the top of the supporting rod is fixedly connected with a handle, the bottom of the bottom plate is provided with a flattening device, the flattening device comprises a connecting rod, the top of the connecting rod is fixedly connected to the bottom of the bottom plate, and the side face of the connecting rod is fixedly connected with a motor. Through the mutual cooperation of the connecting rod, the pressing plate, the reciprocating lead screw, the threaded sleeve, the motor and other components in the flattening equipment, the pavement which is just paved can be flattened, the pavement is prevented from being uneven, the compactness of the pavement is improved, pavement materials are fully compacted and tightly arranged, and the pavement flattening equipment is suitable for being used in the pavement pavement. Therefore, the stability and durability of the pavement are improved, gaps and bubbles in pavement materials can be eliminated through compaction, and the loosening degree of the materials is reduced.

The utility model discloses a kind of automobile body side structure, it is related to automobile parts technical field, including side wall, the inner wall of side wall is fixedly connected with reinforcing rib, the inner wall of side wall is installed with sound insulation cotton, the side wall of side wall is fixedly connected with guide rail.The utility model is provided with side wall, reinforcing rib and sound insulation cotton, by the reinforcing rib of honeycomb shape being set, honeycomb reinforcing rib is supported by grid element mutually, the tensile force, shear force or bending force received is dispersed to multiple grid nodes, and the mechanical transmission path of " multiple point stress - overall bearing " is formed, to improve shear strength, strengthen the protection function of device, in the flexible matrix of using sound insulation cotton, the vibration transmission of side wall can be weakened by damping effect, metal component vibration can be blocked by solid conduction, avoid noise transmission into cabin to provide tranquil cabin environment for driver and passenger.

The invention discloses a semi-solid die-casting device and method for aluminum alloy profiles. The die-casting device includes an upper die, a lower die, and an extrusion mechanism; a cavity, a flow channel, an overflow cavity, and an exhaust channel are formed between the upper die and the lower die; an overflow hole is arranged between the end of the cavity and the overflow cavity, one end of the overflow hole forms a first opening, and the other end forms a second opening, and the portion of the end surface of the cavity located at the periphery of the first opening forms a baffle wall, and the overflow hole is a cone-shaped hole that is small in front and large in the back; the extrusion mechanism includes a guide hole extending downward from the bottom surface of the overflow cavity to the bottom surface of the lower die, an extrusion rod, and a driving unit for driving the extrusion rod to move up and down, and the extrusion rod is movably connected in the guide hole to extrude the aluminum alloy slurry located inside the overflow cavity when moving upward. The invention extrude the aluminum alloy slurry inside the overflow cavity through the extrusion rod, and push the aluminum alloy slurry inside the overflow hole to replenish toward the end of the cavity, so as to eliminate the empty bag and gap at the end of the cavity, and improve the compactness of the aluminum alloy profile.

The utility model discloses an on-chip integrated collimation optical device, comprising a wafer, the surface of which is provided with a plurality of light-emitting areas arranged periodically; the adhesive layer covers the surface of the wafer, optical structures in one-to-one correspondence with the light-emitting areas are distributed on the outer side of the adhesive layer, the optical structures are used for collimating or collecting light beams emitted by the light-emitting areas, and the thickness T of the adhesive layer between the optical structures and the light-emitting areas is 10-500 microns; according to the on-chip integrated collimation optical device, through the innovative on-chip integrated design, the technical bottlenecks that a traditional collimation device is large in size, complex in alignment, high in cost and the like are solved, and remarkable breakthrough is achieved in the aspects of optical performance, production efficiency, application scenes and the like.

The utility model relates to a sealing device for keeping continuous operation of a workpiece in liquid, which comprises a rectangular groove body with two open ends at the upper part and small rectangular groove bodies arranged at the two open ends at the upper part of the rectangular groove body, the two ends of each small rectangular groove body are open ends, and clamping grooves are arranged in the small rectangular groove bodies and at the two open ends. Sealing devices for dividing the small rectangular groove body into at least four grids are arranged in the clamping grooves, a plurality of sealing devices form a sealing array, liquid collecting and deformation preventing devices are arranged among the sealing devices, and each sealing device is rectangular and is formed by fastening three layers of plates through screws; the three-layer plate comprises a left sealing backup plate on one side, a right sealing backup plate on the other side and a seal located between the left sealing backup plate and the right sealing backup plate, a round hole is formed in the middle of the three-layer plate, and a bar workpiece penetrates into the round hole in the middle of the sealing device of the small rectangular groove body on one side to enter the rectangular groove body. And the workpiece penetrates out of the middle round hole of the sealing device of the other small rectangular groove body, so that the sealing requirement of continuous operation of the workpiece in liquid is met.

The invention discloses a large-span prestressed concrete double-T plate pouring machine, and relates to the technical field of double-T plate pouring, the large-span prestressed concrete double-T plate pouring machine comprises a mold body, the upper end face of the mold body is fixedly connected with a mounting frame, the mounting frame is horizontally and slidably connected with a pouring funnel, the lower end face of the pouring funnel is fixedly connected with a pouring pipe, and the lower end of the outer surface of the pouring pipe is fixedly connected with a mounting plate; a through groove is formed in the mounting plate, and an automatic concrete flattening mechanism is arranged on the mounting plate, so that concrete can be automatically and uniformly spread in the mold body in the process of pouring the concrete into the mold body, and uniform distribution of the concrete in the mold body can be ensured; the problems of uneven thickness and uneven surface of concrete caused by improper manual operation are avoided, so that the overall performance quality and appearance of the double-T plate are improved, the labor intensity of workers can be relieved, the risk of misoperation is reduced, the construction process is easier, and the safety of the workers in the construction process is improved.

The utility model relates to prestorage mechanism's technical field especially a kind of double-layer magazine prestorage mechanism of hemp flower packaging machine, it includes material conveying belt, the material conveying belt upper portion is installed one group or multiple groups of mechanical arm;The side of the material conveying belt is installed elastic pressure prestorage station;The side of the elastic pressure prestorage station is installed pillow pack machine prestorage station.This double-layer magazine prestorage mechanism of hemp flower packaging machine, by setting double-layer magazine prestorage mechanism, magazine can be realized continuous movement within limited magazine length, need not stop and wait for grabbing material;Double mechanical arm full-time operation 100% utilization rate;With seamless link of pillow pack machine, prestorage station eliminates station gap, so that magazine can be applicable to any pillow pack machine, midway full-automatic exemption manual.From artificial feeding to hemp flower single packaging, whole conveying mechanism link smooth, can effectively stop according to material card material condition, each component modular design satisfies the individualized needs of customer to product and is convenient for installation maintenance.

The utility model relates to the technical field of carton compaction, and discloses a carton layered compaction device which comprises a machining table, side plates are symmetrically fixed to the top end of the machining table, a set of compaction rollers are distributed on the inner walls of the side plates at equal intervals, a lead screw is rotationally arranged in the machining table, and a double-head motor is connected to the lead screw; and matched screw rod sliding blocks are arranged outside the screw rods on the two sides in a sliding mode, and the top ends of the two screw rod sliding blocks are connected with a first compaction supporting plate and a second compaction supporting plate correspondingly. The carton box is guided to be in place through the material guide plate, the top of the compaction roller is preliminarily compacted through transmission parts such as a motor, and a foundation is built for subsequent operation. The lead screw drives the lead screw sliding block, the first compaction supporting plate and the second compaction supporting plate are promoted to apply force from the side face and are matched with the top compaction roller to form multi-direction cooperative compaction, and gaps of the carton are effectively eliminated. And the stretching rod is linked with the contraction block to flexibly adapt to cartons of different sizes, and the baffles prevent the cartons from shifting in the compaction process.

This application relates to the field of unmanned aerial vehicle (UAV) technology, and more particularly to a high-strength carbon fiber shell molding process for UAV fuselages. The high-strength carbon fiber shell molding process for UAV fuselages includes the following steps: material preparation → cutting → coating with epoxy foam material → bonding → mold closing → hot pressing → demolding → finishing → finished product. The material preparation involves preparing carbon fiber cloth with the same carbon fiber direction. The bonding process involves bonding n layers of carbon fiber cloth coated with epoxy foam material on one side to m layers of carbon fiber cloth, respectively. The fiber direction angles of any two adjacent bonded layers of carbon fiber cloth are different, where n is 3-6 and m is 8-15 degrees. The high-strength carbon fiber shell molding process proposed in this application, through simple process steps and optimized material combinations, can produce high-strength carbon fiber shells with excellent appearance quality, meeting the strength and appearance quality requirements of UAV fuselages, and has low cost and high production efficiency.

This utility model discloses a positioning steel plate device, relating to the field of construction engineering technology. It includes: a positioning steel plate body having two opposing surfaces, a rebar positioning hole, and a pre-drilled hole for a vibrator, wherein both the rebar positioning hole and the pre-drilled hole for the vibrator penetrate both surfaces of the positioning steel plate body; and an elevation adjustment unit for adjusting the height of the positioning steel plate body relative to the ground. Compared with existing technologies, the rebar positioning hole in this utility model provides rapid and highly accurate rebar positioning. Furthermore, the elevation adjustment unit allows for adjustable height of the positioning steel plate body and controllable rebar extension length, reducing the risk of rebar misalignment and insufficient vertical rebar extension length during construction. This improves on-site quality control and ensures better construction quality.

The utility model relates to a connecting piece at the corner of a handrail of a plastic-wood guardrail, which comprises two corner rods, arc-shaped grooves are formed in the opposite sides of the two corner rods, round holes are formed in the sides, far away from each other, in the two arc-shaped grooves, and the two corner rods are arranged in the round holes. The inner ends of the round holes are fixedly connected with reset springs, and the ends of the reset springs are fixedly connected with limiting blocks. The utility model relates to the technical field of plastic wood handrail mounting structures. According to the connecting piece at the corner of the handrail of the plastic-wood guardrail, when the connecting piece is used, a positioning column can be inserted between arc-shaped grooves in two corner rods, preliminary positioning is carried out through a limiting block, then an outer gear sleeve is driven to rotate by inserting a sleeve plate, a gap between the two corner rods is closed, meanwhile, a toothed plate is inserted into the corresponding corner rod, and the corner rod is fixed through the toothed plate; and the effect of quick connection and disassembly of the corners of the plastic-wood guardrail is achieved.

This invention relates to the field of ring main units (RMUs), and discloses a safety protection RMU adapted to smart grids. The RMU includes a housing with two symmetrical left and right hinged doors at the door frame. A circular waterproof groove is also provided at the door frame. When closed, the doors enclose the waterproof groove. The RMU also includes a canopy assembly and a support assembly. The canopy assembly includes a tarpaulin, a straight plate, and a retractable rod. One end of the tarpaulin is connected to the retractable rod, and the other end is connected to the straight plate. This application achieves multiple seals when the door is closed through the waterproof groove and the tarpaulin. The height difference between the central rod and the straight plate allows the tarpaulin to form an inclined roof when the door is open, preventing rainwater backflow. A moving plate drives a U-shaped slider to laterally widen the tarpaulin and eliminate gaps. A gear and rack linkage automatically forms a diagonal brace when the RMU is pulled out, comprehensively improving the RMU's leak-proof performance, maintenance convenience, and operational safety.

The invention discloses an assembly type edge component and a connecting method, and belongs to the technical field of assembly type building systems. The problems that in the current building construction process, a cast-in-place edge component is low in construction efficiency, the project advancing progress is affected, and the building construction cost is increased are solved. The assembly type edge component comprises an assembly type edge component body and beam bars, the beam bars are connected to the side wall of the assembly type edge component body, the assembly type edge component body comprises vertical steel bars, edge component stirrups and a concrete entity, the vertical steel bars and the edge component stirrups are arranged in the concrete entity, and the vertical steel bars are connected with the edge component stirrups. According to the fabricated edge component and the connecting method, the components are connected simply and conveniently, and the construction period is shortened.

The utility model provides an abnormal sound prevention type automobile ball head assembly, belongs to the field of automobile suspension, and solves the problems that a ball head pin is abraded with a ball seat after violent movement, and abnormal sound occurs. The ball pin is installed in the main body, an upper ball seat is installed on the ball pin, a groove is formed in the upper ball seat, a belleville spring is installed in the groove, an installation groove is formed in the main body, a shaft check ring is installed in the installation groove, and the shaft check ring makes contact with the upper end face of the upper ball seat and extrudes the belleville spring. A dust cover is sleeved outside the ball pin and the main body, a retainer ring and a sealing plate are mounted on a first fixing part and a second fixing part of the dust cover, and an oil filling port is arranged below the main body and is provided with an oil nozzle. The utility model has the advantages that: lubricating oil is injected into the main body through the oil nozzle, so that the sealing performance is enhanced while the lubrication is ensured; the belleville spring is additionally arranged in the upper ball seat, so that the upper ball seat presses the ball pin, the ball pin is tightly attached to the ball seat, and the service life is prolonged.